基于数值模拟的泥石流危险性评价研究

基于对吴家溪泥石流地质灾害实地调查详细数据的综合分析,开展了滑坡的地形地貌、物源、水源、特征值四个方面评价研究,并用数值软件对泥石流进行数值模拟。结果表明:数值软件模拟得到的稳定性安全系数比较接近实际情况;计算研究发现该泥石流为暴雨激发型的高频泥石流,暴雨工况下滑坡则表现的极不稳定,容易在滑坡的条件下再次发生泥石流灾害;该滑坡危险性较大,应积极进行防护治理。

Based on the comprehensive analysis of the detailed data of the field survey into Wujiaxi debris flow geological hazard,four aspects of the landslide's topography and geomorphology,provenance,water source,and characteristic values were evaluated and researched,and numerical software was used to simulate the debris flow.The results show that the stability safety factor obtained by numerical software simulation is relatively close to the actual situation;the calculation studies have found that the debris flow is a high-frequency debris flow triggered by rainstorms,and the landslide under rainstorm conditions is extremely unstable and prone to reoccurrence of debris flow disasters under landslide conditions;and the landslide is more dangerous and should be actively protected.